Mercurial > hg
view contrib/undumprevlog @ 49520:eb02decdf0ab
dirstate-v2: skip evaluation of hgignore regex on cached directories
By making the computation of [has_ignored_ancestor] lazy we're eliding
its computation in the common case when none of its descendants have
changed on disk.
On a ~400k files repo, with a cached status, we saw a ~64% reduction
in CPU time, resulting in a speedup of ~10-15% (on ZFS), and a speedup
of ~38% of XFS (XFS has faster stat operations for some reason).
author | Arseniy Alekseyev <aalekseyev@janestreet.com> |
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date | Mon, 10 Oct 2022 14:48:39 +0100 |
parents | 6000f5b25c9b |
children |
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#!/usr/bin/env python3 # Undump a dump from dumprevlog # $ hg init # $ undumprevlog < repo.dump import sys from mercurial.node import bin from mercurial import ( encoding, revlog, transaction, vfs as vfsmod, ) from mercurial.utils import procutil from mercurial.revlogutils import ( constants as revlog_constants, ) for fp in (sys.stdin, sys.stdout, sys.stderr): procutil.setbinary(fp) opener = vfsmod.vfs(b'.', False) tr = transaction.transaction( sys.stderr.write, opener, {b'store': opener}, b"undump.journal" ) while True: l = sys.stdin.readline() if not l: break if l.startswith("file:"): f = encoding.strtolocal(l[6:-1]) assert f.endswith(b'.i') r = revlog.revlog( opener, target=(revlog_constants.KIND_OTHER, b'undump-revlog'), radix=f[:-2], ) procutil.stdout.write(b'%s\n' % f) elif l.startswith("node:"): n = bin(l[6:-1]) elif l.startswith("linkrev:"): lr = int(l[9:-1]) elif l.startswith("parents:"): p = l[9:-1].split() p1 = bin(p[0]) p2 = bin(p[1]) elif l.startswith("length:"): length = int(l[8:-1]) sys.stdin.readline() # start marker d = encoding.strtolocal(sys.stdin.read(length)) sys.stdin.readline() # end marker r.addrevision(d, tr, lr, p1, p2) tr.close()